Armco Lite info document - Lockinexlockinex.com/index_htm_files/Armco Lite info document.pdf ·...
Transcript of Armco Lite info document - Lockinexlockinex.com/index_htm_files/Armco Lite info document.pdf ·...
Main advantages
• xcellent corrosion resistance:three times better than galvanisedsteel (based on outdoor tests)
• Self-healing e�ectensures excellent edge protection
• Best and most cost-effectivealternative to post-galvanised steels
• Wide feasibility range
• xcellent processing properties
• nvironmentally friendly
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3%
3.5%
What is Magnelis® ?Magnelis® is an exceptional metallic coating which provides a breakthrough in corrosion protection. Magnelis® is also the best choice for a wide variety of applications.
Thanks to its unique composition, Magnelis® provides an unprecedented level of surface and cut-edge protection, even in the most hostile environments.
Magnelis® is produced on a classic hot dip galvanising line, but the molten bath has a unique chemical composition including zinc, 3.5% aluminium, and 3% magnesium.
Oil or -passivation®
Oil or -passivation®
Magnelis® coating layer
Magnelis® coating layer
Steel substrate
Magnelis® has a naturally dark grey aspect. It is available with an environmentally friendly E-passivation® or it can be oiled on request.
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The perforated zone on a safety barrier is protected by the self-healing e�ect of Magnelis®.
The self-healing e�ect of Magnelis® ensures the protection of uncoated edges, scratches and perforations
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When exposed to the environment, Magnelis® forms a very dense zinc-based protective �lm, unlike galvanised where the �lm is very porous.
This unique dense �lm is also formed on edges, welds, perforations and scratches. In case some red rust was present on these uncoated zones, the red
rust will be gradually covered by the Magnelis® �lm.
It is almost impossible for the environment to penetrate this �lm. The result is that Magnelis® provides perfect protection of the whole structure, even on the uncoated edges, scratches and perforations.
* The speed of the self-healing may depend on the environment.
Magnelis® coating
dge protectionwith self-healing e�ect
Initial exposure period (up to several weeks*)
The exposed cut end of the substrate is oxidised and forms red rust.
Subjected to rain and condensation (beyond several weeks*)
The zinc-based �lm containing magnesium on the coating layer migrates over the cut end.
Long exposure period (after more than a year*)
Disappearing of red rust and increasing of white rust.
red rust
white rust
steel substrate
steel substrate
steel substrate
Magnelis® coating
Magnelis® coating
Magnelis® coating
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Corrosion resistance, accelerated corrosion tests
Hot dip galvanised 20 µm after 6 weeks
Magnelis® 20 µm after 12 weeks
Magnelis® 20 µm after 34 weeks
Post-galvanised 85 µm after 12 weeks
Salt spray and cyclic corrosion test results highlighted the superior performance of Magnelis® compared to other metallic coatings. No red rust was observed on steel with a 20 µm coating of Magnelis® after 34 weeks of salt spray testing. Magnelis® o�ers a real advantage over post-galvanised steel.
consumed thickness
(µm)
Coating loss after 6 weeks
post-galvanised galvanised
These are results from a 3CT (VDA 621-415) cyclic corrosion test. Source: ArcelorMittal R&D
Magnelis® versus pre-galvanised (salt spray test)
Magnelis® versus post-galvanised (salt spray test)
35
25
30
15
20
10
0
5
Magnelis®
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Features Magnelis® versus hot dip galvanised (Zn)
Anti-corrosion properties
Outdoor corrosion
Agricultural buildings (animal housing, barns, greenhouses, silos…)
Marine environments (construction, swimming pools…)
Industrial environments (acid- or alkaline-rich environments)
High humidity
Contact with concrete
Abrasion
Soil corrosion
dge protection thanks to self-healing e�ect
Perforations or scratches on exposed applications
Corrosion of formed parts (bent or stamped)
Temporary protection (transport, storage)
Processing properties
Bending and pro�ling
Forming and shaping
Welding (equivalent coating thickness)
Painting
Bene�ts of Magnelis® in a nutshell
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Armco Beam Properties
Beam comparison
1.5mm Thick Beam 3mm Thick Beam Weight (kg/m) 5.7 11.7
Permissible Moment capacity (N.m) 3.64 6.82 1000N Centre point load Deflection at 3.2m post spacing (mm) 6.7 3
Galvanising composition Zn Al Mg Zn Potential Average Coating Life (years)
(dependent on environmental conditions) 30 20
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